Roof jack



April e, 1926. 1,580,027

- F. FAGG ROOF JACK Filed August 22 1924 -2 Sheets-Sheet 1 glwu'nfo'creel rich Fagg v April 6 1926.

' F. FAGG ROOF JACK Filed August 22, 1924 2 Sheets-Sheet g I gwuenfoz.fiedl'fi'cx Fagg Patented Apr. 6, 1926-.

UNITED STATES PATENTJOFAFICE.

rnnnniox FAGG, OF SPRINGFIELD, inssoun noon JACK,

'Applicatio n filed August 22, 1924. Serial No.1733,620.

, To all whom it may mm.

, lowing is a specification,

had therein to the accompanying draw ng.

ports to hold the platform in positions according to the pitch of theroof, thereby facilitating the laying of shingles. Anotherpurpose is toprovide, in conunction with the base (which is preferably of wood)opposite edge bars of any suitable metal, preferably iron or steel,which are tion of'a roof, showing the improved roof bolted to'theopposite edges of the base, there being lugs on the edge bars projectingbelow the base and adapted to engage with the edges of the shingles tosupport the roof jack in position.

Still another purpose is to provide means,

. such as adjustable supporting bars, for the support of a platform I(which is hingedly mounted on'the base) in various positions accordingto the pitch of the roof, there being beveled ends adjacent the mountingof the bars causing projections to be formed which rest upon theshingles which have been applied, in order to incline the @base/.relative to the face of the shingles to insure the lugs engaging morefirmly with the upper edges of the shingles. I 1 A further purpose isthe provision of a sub-base constructed of wood and which is especiallyused when laying asphalt roofing. In this connection, the subbase'isfastened detachably by suitable means to the main base andrestsupon the asphalt, holding the main base out of contact with thesurf-ace ofthe asphalt and thereby preventing the lugs on the edge barsand the extensions on the supporting bars from engaging with and cuttingholes in the asphalt,

In using the {sub-base, theinvention includes a suspension rope or cabledetachably connected to the platform with a hook at one end to engagewith the rid roofto support the roof jack. 7 he rope or cable'isprovided with a pluralityof rings, with any one of which a hookfon theplatform" may engage to support the jack e of the indifferent positionsbetween the ridge 'and thelower edge of thereof.

It is'apparent that the rope be used in conjunction'fwith the roof jack,

"in addition to the lugs on the edge bars,

when laying shingle roofs to insure against displacementof the roofjack. I

It is to be uiiderstoodthat the particulars ierein given are in no waylimitative and that,jwhile still keeping within thescope of theinvention, any desired modifications of detail and desired proportionsmay be made in the apparatus according to the circumstances. f g I Theinvention comprises set forth, shown in the drawings and claimed. 7

Inthe drawings:

Figure 1 is a view in perspective of a por- 0 further features andcombinations of parts to be hereinafter or cable may jack applied inaccordance with. the inven- Figure 5 is an enlarged detail perspectiveview of-the upper endsof the main and subbases andshowing a portionofthe platform, more clearly detailing the construction.

Figure 6 is a view of the roof jack collapsed,

Figure ing the roof jack as supported on a hip roof.

Referring to the drawings, 1 designates the main base of the roof jackwhich is preferably constructed of wood, and fastened to the edges ofthe main base by bolts 2 and 3 are edge bars 4 of any suitable metal,preferablyiron. The bolt 3 also passes through the lower endsof'suppo'rting bars 5 providedwith a plurality ofopenings, or

7 is a detail perspective view showapertures 6. Certain of theregistering apertures of these bars receive a bolt 7 (whichengages'.'tlirougli metallic straps 8 on the underfa'ceof a platform 9)for the support of the'platform. I

The platform 9 is operatively connected to the base by means of asuitable hinge 10 of which an elongated tapered leaf is secured to theplatform 9 while a rectangular leaf is secured to the main base, wherebythe platform may be disposed in difierent posh tions. The platform isconstructed of wood and engaging transversely through its hinged end isa bolt 11 whichls purposely applied for reinforcing the wood, in fact,preventing the wood from splitting.

The ends of the edg'e bars 4 adjacent the hinge of the platform havelugs 12 which are under-cut as shown and are designed to engage with theupper edge of the last row of shingles being laid to support the roofjack in position while laying an adjacent row of shingles. Thesupporting bars 5 beyond their pivots have beveled oti' extensions 14which protrude beyond the base, the bevels 13 causing'sharpenedextremities to be formed on the extensions, Which serve the purpose ofholding the main base at an angle to the surfaces of the shingles whichhave been laid, the extremities of the extensions slightly biting intothe shingles to insure against slipping. In holding the main base at anangle to the surfaces of the shingles, the lugs 12 are insured a firmengagement with the edges of the shingles.-

The roof jack includes a sub-base 15, preferably of wood, which isfastened to the under surface of the main base by any suitable means,preferably screws. It is obvious that the sub-base may be easilydetached at any time to permit the main base to be used in conjunctionwith laying shingles. However, the sub-base is particularly adapted foruse in connection with a roof jack when laying asphalt roofing. Thesub-base serves the purpose of supporting the main base from engagementwith the asphalt, thereby preventing the lugs 12 and the extensions 14from engagement with and cutting holes in the asphalt.

The sub-base is of a width equal to the combined width of the main baseand the edge bars, enabling the supporting bars 5 to be collapsed inengagement with the remote faces of the edge bars i, with the platformlying against the main base when the roof jack is not in use. In orderto permit the sub-base to be attached to the main base and not interferewith the lugs 12, the upper corners of the sub-base have notches 16 withwhich the lugs 12 engage.

An eye olt 17 passes through the elongated tapered leaf of the hinge andis screwed into the platform, which is of wood, and a suspension rope orcable 18 is provided. This suspension rope or cable has at one end ahook l9'and is provided'with a plurality of rings 20, with any one ofwhich the eye bolt 17 may engage to support-the roof jack in differentpositions on the roof, more especially when laying asphalt roof-However, it is possible to use the rope or cable in connection with theroof jack when laying shingles, in the event that the lugs 12 will notsupport the roof jack in the desired position and also to insure theprevention of the lugs disengaging from the edges of the shingles.

When the roof jack is not in use, it is possible to collapse thesupporting bars 5 against the remote faces of the edge bars 4 and inthis case the bolt 2 may be removed and inserted through certain of theregistering apertures of the bars 5. hen the bars 5am so collapsed, thebolts 7 may be emloyed to engage through apertures 6 and 21 of the edgebars 5 and i and transversely through the main base. When the roof jackn otin use and collapsed, the rope or cable may be tied aro'fnd theplatform and the main base to hold the latter in such position.

As the roof progresses in construction, whether it is made of asphalt orof shingles, the roof jack may be adjusted accordingly.

The rope or cable is of special use in the construction of hip roofs andin this event, a suitable screw-eye 22 is fastened to the hip rafter andwith which the hook at one end of the cable or rope engages.

The invention having been set forth, what is claimed is:

1. As an article of manufacture, a roofing jack consisting ofmain andsub-bases, the latter being detachably secured flatwise to the formerand pro-videdwith corner notches at one end thereof, a platform hingedlyconnected to one end of the main base with means pivotally connected tothe opposite end of the main base for supporting the platform in ahorizontal position according to the pitch of the roof, and edge barsdetachably carried by the opposite longitudinal edges of the main baseand provided with projecting lugs at their ends adjacent the pivot, ofthe platform to enter the notches and overlie the edge walls of thenotches.

2. As an article of manufacture, a roofing ack consisting of main andsub-bases, the latter being detachably fastened flatwis'e to the former,a platform pivoted to one end of the main base with bars detachably andadjustahly connected to the other end of the platform, the bars in turnbeing pivotally' connected to the opposite end of the mainbase, and edgebars detaehably fastened to the opposite longitudinal edges of the mainbase and provided with projecting lugs, the lugs of the edge barsactingto overlie the s end ed -e of the sub-base.

In testimony whereof he his signature.

F FAGG!

